Safety valve for gas jets and the like



May 5, 1925.

1,537,001 H. BENVIE SAFETY VALVE Fon GASl JETS AND THE LIKE Filed Jan. 6, 1922 Patented May r Y5,

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i :ammenda :ma einem' 6,1922. sensi rm. 'enligne To all 'w71 om t may concern v.Be Iitlrnown that .Liliane-ERT BENVIE, av

citizen of the United States, and fa resident of Meriden, in the county of New Haven eind f rStateot'Gonnecticudhaveinvented new and useful Improvements in Safety Valves for Gas Jets and the like, `of which the following is 'a full, clear, and fexactf description.

This invention relates to improvements in akfetyi devices for use with gas jets or the 1 e. f "In the use of portable ,gas stoves the hose, which is provided to .connect the same to the gas jets, has always been a ysource of ill' gas is turned .on there is a possibility of severing the Yconnection between I'the hose and gas jet. When "such an undesirableV accident occurs there is always a considerable of gas which may leadtodamage to life and and hose which has mounted therein a spring-controlled valve that is normally held in an open position and providingl a means engagedby the hose and co-operating with the valve to release the same upona pull of sullicient strength being exerted on the hose. i p

`This and other objects of the invention will be more kclearly understood from the following detailed description and accompanying drawings. f

Figure 1 is a sideV elevation of the safety device showing the valve in its normal position; .f j

Figure 2 is a. side elevation of the safety device showing thev position of the valve after it has been released from` the,y means provided for holding itin an openedy position' s Figure 3 is across section through the vsafety device; y

Figure 4 is an end View? showing the perforated plate used in which the valve is slidably mounted. Referring to the above=iuentioned drawdanger since in moving the stove when the' ings, the safety device assemblage 10 is shown mounted on a gas jet 11 and :having a :hose 1-2 attac/'hed thereto. The safety 'device assemblage l-Oyconsi-sts of atube 13,

one ende-f which is provided with an internal three-61h14 for `engaging the lgas fjet 11, and `,the tapered end .15 :for engaging the hose 12. A valve seat 16 is lined inthe tube K13' .and has /an opening 17 extending therethrough; .jLocat-ed in (the tube r13 at a distance-f-rom the valve seat 16 is 'a perifelrated plate u 22. v Slidably and rotatably mountedvin the plate 22 l'in alinement with ythe opening.17 is la shaft 119. which is part of the valve assemblage 18. Mounted on kthe shaft 19 is la ,perforated piston 21 Inovable inthe tube 13. This perforated ,piston gui-des the longitudinal movement of 'the shaft. Inter osed between 'the perforated V.plate 22iand t e piston 21 is a spring .for

projecting the shaft endwise to carry the conical head 20I into position in the opening 17 tov close the latter.

-A pin 24 is attached to the valve shaft 19 and is movable in a longitudinal slot 25 cut in the wall of the tube 13. A shoulder 26 is formed in the wall of the tube'13 on one "nommer, assreneaor one-Hanno missers and extends radially outward and is in circuinferential alinernent with the shoulder 26. The operation of this device is as follows: The safety attachment is mounted on the gas Ajet as shown inFigures 1, 2 and 3. The

collar 27 is then'forced to the left, as shown at Figure 1, the valve 18y drawn outward andthe pin 24 positioned on the shoulder 26, with the triangular pointer 28 located between the `pins 24 and 29. 1 The tube 12 is then projected over the tapered end 15 of the tube 13 into the position shown in Fig-v ure 1. If in the moving of a stove or the like a strain is exerted on the hose suiiicient to move it on the tapered endl of the tube the collar 27 is drawn outward to the position shown in Figure 2. This forces the triangularrshaped pointer 28 between the pins 24 and 29 and releases the pin 24 from" the shoulder 26. Upon the release of the pin 24 from the shoulder the spring 23, which was compresed by the drawing outward of the valve, forces the conically shaped end of the valve into position in the opening in the valve seat and thus shuts oil1 the supply of gas.

I would state in conclusion that While the illustrated example constitutes a practical embodiment of my invention I do not limit myself strictly to the exact details herein illustrated since manifestly the same can be considerably varied Without departing fromthe spirit of the invention as defined in the appendedclaims.

Claims: j

v1. lA safety valve comprising a casing having a passage therethrough, one end of the casing being constructed for receiving a hose, a valve seat mounted in the casing,v a springcontrolled plunger movably mountedin the casing normally coacting with the valve seat to close the casing passage, means carried by the plunger for engaging'tlie casing to retain the plunger in an inactive position, and means movably mounted on the casing capable of operation bythe movement of the hose for releasing the plunger.

2. A safety valve Comprising a tube having one end threaded for mounting on gas jet and the other end tapered to engage a hose, a valve seat fixed in the tube, a springcontrolled valve slidably mounted in the tube and co-operatng with the valve seat, a pin extending through the valve shaft and movable in a longitudinal slot cut in the tube Wall to engage a shoulder in the tube Wall at one side of the slot to retain the valve in' an opened position, a collar slidably mounted on the tube and engaging the rubber hose, and a projection in conjunction with the collar for releasing said pin from said shoulder operated by a pull on the hose.

3. As a1 new article of manufacture, a device of the class described, comprising a tube having means in conjunction with one end for attaching it to a gas jet, and means iii-conjunction with the other end for engaging a hose, a valve seat fixed in said tube, a valve co-operating with said valve seat, a spring for holding said valve in position in the valve seat, a pin attached to the valve shaft and movable in a longitudinal slot cut in the tube Wall, means in conjunction Witli the tube ivall for engaging the pin to retain the valve in open position, a collar slidable on the tube and engaged by the hose, and a triangular shaped projection integral with the collar and co-o'perating with the pin to release it from the said retaining means. j

HERBERT BENVIE. 

